Calgary doctor files human rights complaint over changes to mask rules on airplanes

Passengers wear masks at the Calgary airport on Oct. 30, 2020. Passengers wear masks at the Calgary airport on Oct. 30, 2020.

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Putin calls nuclear weapons a tool of deterrence in Ukraine

Russian President Vladimir Putin on Wednesday hailed the annexation of Ukrainian territories as a major achievement and said his country's nuclear weapons serve as a tool of deterrence in the war that the Kremlin calls a 'special military operation.'